Thyristors

Thyristors are four-layer semiconductor devices, also known as a silicon controlled rectifier (SCR) It is like a fast static switch and is good for controlling large amounts of power, they can also control the speed of DC motors.

How do thyristors work?

Thyristors usually consist of three electrodes: an anode (positive terminal), Cathode (negative terminal) and a gate. (You can also get thyristors with two or four leads). The gate is the main control terminal while the main current flows between the anode and cathode Thyristors are made of N-type and P-type materials. The N-type material is formed by doping an element with electrons to increase the number of negative charge-carrying electrons. The P-type material is also produced through doping, although the resulting charge-carrying electrons are positively charged. By alternating layers of P and N-type material, a semiconductor thyristor device is formed. Thyristors are used to create a latching circuit. Thyristors can be turned on using the gate. It then turns off when the voltage across the anode-cathode drops back down to zero.

Types of thyristors

  • Silicon controlled rectifier (SCR) - The basic purpose of an SCR is to function as a switch that can turn on or off small or large amounts of power.
  • Silicon controlled switch (SCS) - Silicon Controlled Switch (SCS) is a device similar to an SCR, but it is designed to turn off when a positive voltage/input current pulse is applied to an additional "Anode gate".
  • Triac - Triac gets its name from Triode for alternating current Triacs are similar to SCRs but it conducts in both directions, (a bidirectional device). This means that it can switch AC and DC currents., Firing circuit commander modules are required for this.
  • Four-layer diode - A four-layer diode has 2 pins and is similar to a voltage-sensitive switch. When the voltage between the two pins exceeds the breakdown voltage it turns ON, otherwise its OFF.
  • Diac - Diac is a mix of the words diode and ac switch it is similar to a four-layer diode but it can conduct in both directions meaning it can contact both AC and DC currents.

Applications of thyristors

Thyristors are commonly found in many everyday applications such as:

  • Motor speed controls
  • Pressure control systems
  • Light dimmers
  • Liquid level regulators

...
Lees meer Lees minder

Filters

1 - 20 van 846 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs Rated Average On-State Current Thyristor Type Package Type Repetitive Peak Reverse Voltage Current Rating Surge Current Rating Mounting Type Power Rating Maximum Gate Trigger Current Output Isolation Input Voltage AC Maximum Gate Trigger Voltage Input Voltage DC Maximum Holding Current
RS-stocknr. 468-2369
FabrikantnummerSKKH 106/16 E
FabrikantSemikron
€ 200,48
Each
Aantal stuks
106A SCR Module SEMIPACK1 1600V - 2.25kA Panel Mount - 150mA - - 3V - 250mA
RS-stocknr. 841-924
FabrikantnummerPSR-25
€ 44,07
Each
Aantal stuks
- - - - 25A - Panel Mount 6kW - - - - - -
RS-stocknr. 214-3979
FabrikantnummerZVS-16DV
€ 67,88
Each
Aantal stuks
- - - - 16A - Screw Mount 3.7kW - - - - - -
RS-stocknr. 214-3963
FabrikantnummerQVR-TB-RFI
€ 64,69
Each
Aantal stuks
- - - - - - Panel Mount - - - - - - -
RS-stocknr. 379-6518
FabrikantnummerPAC-2
€ 73,15
Each
Aantal stuks
- - - - - - Screw Mount - - 3500Vrms 250V ac - - -
RS-stocknr. 102-3580
FabrikantnummerBTW69-1200RG
€ 5,661
Each (In a Tube of 30)
Aantal stuks
32A SCR TOP3 1200V - 610A Through Hole - 80mA - - 1.3V - 150mA
RS-stocknr. 668-7038
FabrikantnummerMCC162-12io1
FabrikantIXYS
€ 44,45
Each
Aantal stuks
190A SCR Module Y4 M6 1200V - 6.4kA Panel Mount - 150mA - - 2.5V - 200mA
RS-stocknr. 714-2640
FabrikantnummerBTW69-1200RG
€ 6,58
Each
Aantal stuks
32A SCR TOP3 1200V - 610A Through Hole - 80mA - - 1.3V - 150mA
RS-stocknr. 168-4597
FabrikantnummerMCC162-12IO1
FabrikantIXYS
€ 42,56
Each (In a Box of 6)
Aantal stuks
190A SCR Module Y4 M6 1200V - 6.4kA Panel Mount - 150mA - - 2.5V - 200mA
RS-stocknr. 919-6245
FabrikantnummerPR3-E-6kW
€ 240,09
Each
Aantal stuks
- - - - 8A - Panel Mount 6kW - - - - - -
RS-stocknr. 262-8335
FabrikantnummerSKKH 92/16 E
FabrikantSemikron
€ 102,36
Each
Aantal stuks
95A SCR Module SEMIPACK1 1600V - 2kA Panel Mount - 150mA - - 3V - 250mA
RS-stocknr. 905-6099
FabrikantnummerSKKT 42/16 E
FabrikantSemikron
€ 106,18
Each
Aantal stuks
40A SCR A 46 1600V - 1000A Panel Mount - 150mA - - 3V - 250mA
RS-stocknr. 193-571
FabrikantnummerMCC26-16IO1B
FabrikantIXYS
€ 20,22
Each
Aantal stuks
32A SCR Module TO-240AA 1600V - 0.56kA Panel Mount - 100mA - - 1.5V - 200mA
RS-stocknr. 146-1690
FabrikantnummerMCC26-16IO1B
FabrikantIXYS
€ 17,289
Each (In a Box of 36)
Aantal stuks
32A SCR Module TO-240AA 1600V - 0.56kA Panel Mount - 100mA - - 1.5V - 200mA
RS-stocknr. 841-930
FabrikantnummerTPSR-25
€ 41,38
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 214-4253
FabrikantnummerSKKH 92/08 E
FabrikantSemikron
€ 57,02
Each
Aantal stuks
95A SCR Module SEMIPACK1 800V - 2kA Panel Mount - 150mA - - 3V - 250mA
RS-stocknr. 668-7010
FabrikantnummerMCC95-08io1B
FabrikantIXYS
€ 25,63
Each
Aantal stuks
116A SCR Module TO-240AA 800V - 2.4kA Panel Mount - 150mA - - 2.5V - 200mA
RS-stocknr. 905-6074
FabrikantnummerSKT 16/16 E
FabrikantSemikron
€ 25,60
Each
Aantal stuks
18A SCR A 46 1600V - 2000A Thread Mount - 150mA - - 3V - 250mA
RS-stocknr. 214-3957
FabrikantnummerQLC-TB-RFI
€ 68,46
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 195-3517
FabrikantnummerBVR-25
€ 136,14
Each
Aantal stuks
- - - - 25A - Panel Mount - - - - - - -